EP2975486A2 - Procédé de remplissage d'un récipient avec un produit de remplissage a l'aide d'une soupape proportionnelle - Google Patents

Procédé de remplissage d'un récipient avec un produit de remplissage a l'aide d'une soupape proportionnelle Download PDF

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Publication number
EP2975486A2
EP2975486A2 EP15177264.7A EP15177264A EP2975486A2 EP 2975486 A2 EP2975486 A2 EP 2975486A2 EP 15177264 A EP15177264 A EP 15177264A EP 2975486 A2 EP2975486 A2 EP 2975486A2
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EP
European Patent Office
Prior art keywords
filling
volume flow
proportional valve
function
curve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15177264.7A
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German (de)
English (en)
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EP2975486B2 (fr
EP2975486A3 (fr
EP2975486B1 (fr
Inventor
Florian Angerer
Josef Doblinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krones AG
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Krones AG
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Application filed by Krones AG filed Critical Krones AG
Priority to SI201530379T priority Critical patent/SI2975486T2/sl
Publication of EP2975486A2 publication Critical patent/EP2975486A2/fr
Publication of EP2975486A3 publication Critical patent/EP2975486A3/fr
Application granted granted Critical
Publication of EP2975486B1 publication Critical patent/EP2975486B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/007—Applications of control, warning or safety devices in filling machinery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
    • B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
    • B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
    • B67C3/22—Details
    • B67C3/28—Flow-control devices, e.g. using valves
    • B67C3/286—Flow-control devices, e.g. using valves related to flow rate control, i.e. controlling slow and fast filling phases
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means

Definitions

  • the present invention relates to a method for filling a container with a filling product by means of a proportional valve, in particular for filling a container with a beverage.
  • volumetric flow meter for example an inductive volumetric flow meter.
  • This volumetric flow meter is typically arranged above the filling valve and measures the volume flow flowing into the container during the filling process. Accordingly, after reaching a predetermined filling volume, the filling process can be ended.
  • the known methods for completing the filling are according to control methods in which a measuring element is provided, for example a flow meter or a weighing cell, via which the filling is regulated.
  • filling valves which are designed as proportional valves and which correspondingly permit a substantially stepless control of the volume flow.
  • a proportional valve is usually controlled via a stepper motor, such that it can achieve a desired opening position reliably and reproducibly.
  • the closing process towards the end of the filling process is much slower than in a conventional switching valve.
  • the achievable closing times are about a factor of 5 longer.
  • the follow-up volume, which flows from the closing request to the complete closing of the proportional valve this is significantly greater than in a conventional switching valve.
  • a method for filling a container with a filling product by means of a proportional valve comprising the steps of determining a function of the volume flow q (t) for a given opening curve H (t) of the proportional valve and controlling the filling of the container on the basis of the function the volume flow q (t).
  • the filling process can be controlled on the basis of the determined volume flow. Accordingly, eliminates the complex known from the prior art control and the corresponding measuring elements, such as the volume flow meter or the load cell can be dispensed with.
  • the volume flow flowing through the proportional valve can thus be calculated from the function determined for any desired opening position of the proportional valve.
  • the calculated volumetric flow curve which indicates the volumetric flow of the filling product actually flowing into the container, the filling process can be controlled accordingly and, in particular, the switch-off time can also be determined.
  • the calculation of the calculated actual volume flow assumes the function of a measuring element, which would normally measure the actual volume flow and would return this as a controlled variable to the control for comparison with the predetermined by the desired volume flow guide. Accordingly, can be dispensed with a control on the measuring element and provided in this way a technically simplified and reliable structure.
  • ⁇ p is the differential pressure
  • ⁇ is the density of the medium flowing through the proportional valve.
  • the function of the conductance value Kv (H) of the proportional valve for each opening position H by previously measuring the conductance value Kv at discrete opening positions H and determining a function of the conductance value Kv (H) from the discrete values, preferably by determining a compensation function. determined.
  • the function of the guide value Kv (H) is particularly preferably adapted to the discrete values by means of a regression analysis, the least squares method, the determination of a fit or the determination of an equalization polynomial, preferably a sixth order equalization polynomial.
  • the differential pressure ⁇ p by pressure sensors in the boiler bottom of the original vessel and adding the static head to the valve outlet via Level sensors in the original tank and adding the static height to the valve outlet, and / or determined by pressure sensors directly at the outlet of the filling.
  • each of the proportional valve flowing through flow does not exactly correspond to the flow rate, which is at constant opening of the proportional valve after a long time. Rather, this is a dynamic behavior of the volume flow, which can be determined by calculating the volume flow for the given opening curve of the proportional valve.
  • q ⁇ K v H * ⁇ ⁇ p 1000 ⁇ mbar * 1000 ⁇ kg / m 3
  • the corresponding volume flow curve of the inflowing into the container filling product can be determined, so that this volume flow curve can be used to control the filling process.
  • a switch-off time for the proportional valve can be determined in this way.
  • the closing curve H (t) of the proportional valve for the switch-off process is initially determined.
  • this closing curve usually three movement sections are traversed, which has to pass through the stepper motor, namely first the acceleration with a predetermined acceleration until reaching a predetermined constant speed, then closing the valve at the constant speed and then as a third phase of movement braking with a predetermined negative acceleration until zero speed is reached when the valve is fully closed.
  • this type of movement is also carried out by the stepping motor during opening or whenever the opening position of the proportional valve is changed. It is always first carried out an acceleration from the stationary position of the valve to a predetermined constant speed and then again a deceleration until the valve comes to a stop at the predetermined position. This then results in the corresponding opening curves H (t).
  • the correspondingly predetermined opening curve H (t) or closing curve H (t) is now used to calculate the trailing volume. Accordingly, the volume flow occurring is calculated for the given closing curve and calculated therefrom, for example, by integration, the trailing volume still flowing into the container when passing through the closing curve. On this basis, then the filling process can be controlled so that is given at a thus determined closing time of the command for traversing the closing curve. Accordingly, it is achieved that without further control steps, the desired filling volume is achieved during the first filling process.
  • the determination of the volume flow curve q (t) for the given opening curve of the proportional valve continues to serve the entire filling volume of filling product, which in the to be filled container by means of the proportional valve is entered to determine.
  • the turn-off time can be determined correctly after calculation of the filling volume integrated or summed over the predetermined opening curve, and in particular the time at which the closing curve is traversed can be determined.
  • all subsequent filling operations are preferably controlled on the basis of this function or the function of the volume flow q (t) is recalculated for each new filling on the basis of the function of the guide value Kv (H).
  • the volume flow q (t) is preferably calculated, and the trailing volume is calculated by integration via the volumetric flow, taking into account the trailing volume when determining the time for traversing the closing curve.
  • the follow-up volume is preferably calculated for each filling process shortly before the estimated filling end in order to be able to determine the corresponding environmental conditions, in particular the volume flow, the differential pressure and the density, as accurately as possible.
  • the entire filling volume of the filling product is determined by integration of the function of the volume flow q (t) over the filling process and the filling end determined on this basis.
  • FIG. 1 the curve of a measured volumetric flow 1 is shown during a filling process over time t.
  • the volume flow q (t) is the volume of the liquid flowing through the proportional valve per time and is here in the unit ml / sec. specified.
  • Such a curve of the measured volumetric flow 1 results, for example, when a proportional valve with a predetermined opening curve is actuated and correspondingly different opening positions or ramps of the opening position of the proportional valve are passed through during the filling process.
  • curve of the measured volume flow 1 was for a particular proportional valve by means of a The flow meter determines and is accordingly the result of the opening valve curve H (t) passed through by the proportional valve, so that the volume flow curve results as q (H (t)).
  • an opening operation 10 is traversed by a short plateau area 12 followed by an opening ramp 14. Then, the main filling is performed in a plateau region 16 of high volume flow and then go through a closing curve 18.
  • the example shown here is to be understood only as an example, but shows a common behavior of the volume flow 1 when bottling drinks, with as gentle as possible filling is to be achieved with a low AufWebumneist and accurate achievement of the desired filling volume.
  • the determination of the curve of the volume flow 1 described below on the basis of a predetermined opening curve of the proportional valve makes it possible to determine a volume flow curve 1 even without an actual measurement of the volume flow. Rather, the volumetric flow curve 1 can be calculated or simulated by means of the Kv model described below. Accordingly, can be dispensed with the above-described measuring element in the form of the flow meter or a load cell in the normal filling operation, so that a controlled in this way filling device can be constructed simpler, cheaper and more reliable.
  • a specific opening position H i of the proportional valve is approached in an initial calibration process, and the product flow q (H) from the proportional valve is measured at this opening position H i and from this in the steady state the conductance Kv, for example via a measurement by means of a measuring cell like a load cell. This is done for a plurality of discrete opening positions H i of the proportional valve.
  • the differential pressure ⁇ p and the density ⁇ of the medium flowing through the proportional valve must also be determined.
  • the density ⁇ of the filling product is usually known or can be determined by the known measuring methods. For water, the density can be approximated with 1000kg / m 3 and has no influence on the calculation.
  • Kv H i q ⁇ * 1000 ⁇ mbar ⁇ ⁇ p * ⁇ 1000 ⁇ kg / m 3
  • a function of the conductance value over the opening positions of the reference value Kv (H i ) is determined by determining a compensation curve Proportional valve determined.
  • the compensation curve can be determined, for example, by linear regression, the least squares method, a fit algorithm or other known methods for determining a compensation curve by measured values. This determination and calculation is performed for various discrete values of the opening position H i .
  • a polynomial of 6th order can be used as the compensation curve, as is the case for example in FIG. 2 is shown, in which the conductance is recorded on the respective opening position of the proportional valve.
  • a first value range of the opening positions was from 0 to 2 mm and a second one Value range of the opening position used from 2mm to 6mm.
  • the discrete values 20 in the first value range and the discrete values 22 in the second value range were used to form a compensation curve using a polynomial 6th order.
  • Kv H c 6 * H 6 + c 5 * H 5 + c 4 * H 4 + c 3 * H 3 + c 2 * H 2 + c 1 * H + c 7
  • c 1 to c 7 are the corresponding coefficients for fitting the function to the measurement values.
  • FIG. 3 schematically an equivalent circuit of an electric model for a proportional valve is shown.
  • the resistors Rp1-n correspond to a preselectable resistor which corresponds to the conductance Kv and which can be varied according to the character of the proportional valve by opening or closing the respective switch of the resistors connected in parallel.
  • the current source which provides a voltage U, corresponds to the differential pressure, which provides a corresponding pressure for the liquid.
  • the current I corresponds to the volume flow and the inductance L of the accelerated mass.
  • the measured volume flow 1 virtually coincides identically with the simulated volume flow 3. Accordingly, the simulated volume flow 3, with knowledge of the differential pressure, the density of the filling product and the conductance, replace a continuous measurement of the volume flow 1 during the filling operation.
  • the simulated volume flow curve 3 is integrated.
  • FIG. 5 In this case, a curve of the opening positions 4 of the proportional valve in the region of a predetermined closing curve 40 over time t is shown. It can be seen that the values H i of the opening positions 4 are discrete in the embodiment shown, since the proportional valve is driven by a stepper motor.
  • FIG. 5 Also shown is a curve of the measured volume flow 1, which results when closing the proportional valve.
  • the volume flow can also be calculated analogously for the predetermined closing curve 40, ie a curve of the opening positions H (t) of the proportional valve when closing.
  • the entire follow-up volume can be determined.
  • FIG. 6 also the volume flow 3 simulated by means of the method described above is shown. It follows that the simulation of the volume flow 3 of the wake over the given closing curve coincides with the measured curve of the volume flow 1 again. Correspondingly, the accurate switch-off time or the time at the beginning of the passage of the switch-off curve can be correctly determined in this way by a precalculation of the follow-up volume flow, so that control of the filling process via a measuring element, for example a weighing cell or a flow meter, can be dispensed with. This can be dispensed with a scheme and instead a controller can be used.
  • a measuring element for example a weighing cell or a flow meter
  • each proportional valve is associated with a measuring element, such as a flow meter or a load cell.
  • a measuring element such as a flow meter or a load cell.
  • the calculation is carried out as close as possible to the presumed switch-off time in order to carry out the calculation of the follow-up volume as far as possible, which then actually occur in the wake, for example at the liquid level in the feed tank, the corresponding boiler pressure or the product temperature, which then in turn is based on the viscosity of the filling product.
  • the wake By calculating the wake, higher accuracy can be achieved with variations in the product fill level in the boiler, as well as variations in boiler pressure and temperature variations.
  • the first container is already optimally filled and a follow-up control with a measuring element can be dispensed with.
  • FIG. 8 a control is shown which makes use of the calculated volume flow q (t) determined via the Kv model for a given opening position H of the proportional valve, the Kv model also replacing a measuring element in this exemplary embodiment.
  • a desired volume flow 50 is the control, which is designed for example as a PID controller, set as a guide.
  • the desired volumetric flow 50 may also be a desired volumetric flow curve q soll (t), that is to say a volumetric flow which changes over the course of time and which is intended to flow into a container to be filled.
  • a desired opening position H soll is determined via the PID controller, which is transferred as the desired opening position 52 to the actuator of the proportional valve.
  • the proportional valve opens on the basis of this control command and transfers its actual opening position H ist as the actual opening position 54 as the opening position to the Kv calculation model. Due to the inertia of the proportional valve, actual opening position 54 and target opening position 52 may fall apart.
  • the Kv model calculates a calculated actual volume flow q ist-calculated as calculated actual volume flow 56, which is fed back to the control as a controlled variable and is compared with the reference variable of the nominal volume flow q soll . Accordingly, based on the actual opening position H is the controlled variable q is calculated calculated, which is then used to control the target opening position H soll . Contrary to the conventional regulations can be dispensed in this way on a measuring element for determining the controlled variable, ie the actual volume flow. Instead, the measuring element is replaced by the Kv model.
  • the actual volume flow at a certain opening position can be determined with good accuracy via the Kv model.
  • the calculated actual flow q-calculated corresponds therefore broadly to the actually flowing through the proportional valve actual flow q, which could be measured as the actual flow 58th

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Basic Packing Technique (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Flow Control (AREA)
EP15177264.7A 2014-07-18 2015-07-17 Procédé de remplissage d'un récipient avec un produit de remplissage a l'aide d'une soupape proportionnelle Active EP2975486B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201530379T SI2975486T2 (sl) 2014-07-18 2015-07-17 Postopek za polnjenje vsebnika s polnilnim izdelkom s pomočjo proporcionalnega ventila

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014110161.8A DE102014110161A1 (de) 2014-07-18 2014-07-18 Verfahren zum Befüllen eines Behälters mit einem Füllprodukt mittels eines Proportionalventils

Publications (4)

Publication Number Publication Date
EP2975486A2 true EP2975486A2 (fr) 2016-01-20
EP2975486A3 EP2975486A3 (fr) 2016-02-24
EP2975486B1 EP2975486B1 (fr) 2018-08-22
EP2975486B2 EP2975486B2 (fr) 2024-05-29

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ID=53719672

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EP15177264.7A Active EP2975486B2 (fr) 2014-07-18 2015-07-17 Procédé de remplissage d'un récipient avec un produit de remplissage a l'aide d'une soupape proportionnelle

Country Status (6)

Country Link
US (1) US10112816B2 (fr)
EP (1) EP2975486B2 (fr)
JP (1) JP6778476B2 (fr)
CN (2) CN111977045B (fr)
DE (1) DE102014110161A1 (fr)
SI (1) SI2975486T2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017186708A1 (fr) 2016-04-29 2017-11-02 Khs Gmbh Procédé d'optimisation du remplissage d'un récipient
WO2018158373A1 (fr) * 2017-03-01 2018-09-07 Krones Ag Dispositif pour remplir un récipient avec un produit de remplissage stérilisé
EP3705450B1 (fr) 2019-03-08 2022-08-03 Sidel Participations Appareil et procédé de remplissage d'un contenant

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
DE102017119069A1 (de) * 2017-08-21 2019-02-21 Krones Ag Verfahren zum Befüllen von Behältern mit einem Füllprodukt
EP3495911A1 (fr) * 2017-12-11 2019-06-12 Siemens Aktiengesellschaft Système et procédé de remplissage d'un récipient avec un fluide et/ou de fonctionnement d'un système de mélange
DE102017130034A1 (de) * 2017-12-14 2019-06-19 Krones Ag Verfahren und Vorrichtung zum Abfüllen eines Füllprodukts
EP3725734B1 (fr) * 2019-04-18 2021-11-10 Sidel Participations Procédé et appareil pour remplir un récipient
CN114630575A (zh) * 2020-11-09 2022-06-14 深圳市大疆创新科技有限公司 固体物料的播撒控制方法和装置、播撒机、可移动平台

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017186708A1 (fr) 2016-04-29 2017-11-02 Khs Gmbh Procédé d'optimisation du remplissage d'un récipient
DE102016108053A1 (de) 2016-04-29 2017-11-02 Khs Gmbh Verfahren zum Optimieren des Abfüllens eines Behälters
US10618790B2 (en) 2016-04-29 2020-04-14 Khs Gmbh Method for optimizing the filling of a container
WO2018158373A1 (fr) * 2017-03-01 2018-09-07 Krones Ag Dispositif pour remplir un récipient avec un produit de remplissage stérilisé
US11014799B2 (en) 2017-03-01 2021-05-25 Krones Ag Device and method for filling a container with a sterilised filling product
EP3705450B1 (fr) 2019-03-08 2022-08-03 Sidel Participations Appareil et procédé de remplissage d'un contenant

Also Published As

Publication number Publication date
EP2975486B2 (fr) 2024-05-29
SI2975486T2 (sl) 2024-09-30
SI2975486T1 (sl) 2018-10-30
JP6778476B2 (ja) 2020-11-04
CN111977045A (zh) 2020-11-24
DE102014110161A1 (de) 2016-01-21
EP2975486A3 (fr) 2016-02-24
CN105270661A (zh) 2016-01-27
US10112816B2 (en) 2018-10-30
EP2975486B1 (fr) 2018-08-22
JP2016028968A (ja) 2016-03-03
CN111977045B (zh) 2022-09-30
US20160016773A1 (en) 2016-01-21

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